Jawaban:
luas alas : 1/2 × a × t
: 1/2 × 15 × 21
: 1/2 × 315
: 157,5
luas sisi tegak : keliling × t
: (15 + 8 + 21 ) × 21
: (44)×21
: 924
luas permukaan prisma : 2 × l.alas + sisi tegak
: 2×157,5+924
: 315 + 924
: 1239
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Jawaban:
luas alas : 1/2 × a × t
: 1/2 × 15 × 21
: 1/2 × 315
: 157,5
luas sisi tegak : keliling × t
: (15 + 8 + 21 ) × 21
: (44)×21
: 924
luas permukaan prisma : 2 × l.alas + sisi tegak
: 2×157,5+924
: 315 + 924
: 1239